Finding the Third Proportional to 648,419 and 1,396,711

Step by Step Solution

1. Step 1: Write the proportion equation
   648,419 : 1,396,711 = 1,396,711 : x
2. Step 2: Convert to fraction form
   648,419/1,396,711 = 1,396,711/x
3. Step 3: Cross multiply
   648,419x = 1,396,711 × 1,396,711
4. Step 4: Simplify right side
   648,419x = 1,950,801,617,521
5. Step 5: Solve for x
   x = 1,950,801,617,521/648,419
6. Step 6: Final answer
   x = 3,008,550.98